fire alarm vs hooter

fire alarm

noun
  • The sound or other warning made by a fire alarm. 

  • An electromechanical or electronic bell, klaxon, chime, horn, speaker, strobe light or other device which warns people in a building of a possible fire or other condition requiring evacuation. 

  • An emergency response to a fire by the fire department with manpower and equipment. 

hooter

noun
  • A siren or steam whistle, especially one in a factory and used to indicate the beginning or the end of a working day or shift. 

  • An owl. 

  • A woman's breast. 

  • The horn in a motor vehicle. 

  • A penis. 

  • A person who hoots. 

  • A nose, especially a large one. 

  • A large cannabis cigarette. 

How often have the words fire alarm and hooter occurred in a corpus of books? (source: Google Ngram Viewer )